diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5cbb59e..c5f78bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -115,9 +115,9 @@ ENDIF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 
 INCLUDE_DIRECTORIES(GLOB_RECURSE ${CMAKE_SOURCE_DIR}/extern/bullet/src/*.h)
 
-SET (LIBRARIES ${LIBRARIES} ../extern/bullet/build/src/BulletCollision/libBulletCollision.a)
-SET (LIBRARIES ${LIBRARIES} ../extern/bullet/build/src/BulletDynamics/libBulletDynamics.a)
-SET (LIBRARIES ${LIBRARIES} ../extern/bullet/build/src/LinearMath/libLinearMath.a)
+SET (LIBRARIES ${LIBRARIES} ${CMAKE_SOURCE_DIR}/extern/bullet/build/src/BulletCollision/libBulletCollision.a)
+SET (LIBRARIES ${LIBRARIES} ${CMAKE_SOURCE_DIR}/extern/bullet/build/src/BulletDynamics/libBulletDynamics.a)
+SET (LIBRARIES ${LIBRARIES} ${CMAKE_SOURCE_DIR}/extern/bullet/build/src/LinearMath/libLinearMath.a)
 
 ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCE_FILES} ${HEADER_FILES} ${SHADER_FILES} ${README_FILES})
 TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${LIBRARIES})